title: GCP Service Account or Key Creation
id: 2f0b7c3e-6a41-4c1e-9b8a-1d2e3f4a5b05
status: experimental
description: New service accounts or keys, named in Railway's GCP guidance as signs of misuse of exposed service account keys.
references:
    - https://blog.railway.com/p/security-disclosure-recommendation-check-for-anomalous-gcp-access
author: Defensive detection pack
date: 2026-10-22
tags:
    - attack.persistence
    - attack.t1098.001
logsource:
    product: gcp
    service: gcp.audit
detection:
    selection:
        gcp.audit.method_name|contains:
            - CreateServiceAccountKey
            - CreateServiceAccount
            - UploadServiceAccountKey
    condition: selection
falsepositives:
    - Legitimate administration
level: medium